Java Programming

Java 8 – Check if Two Strings are Anagrams

Introduction An anagram is a word or phrase formed by rearranging the letters of another, typically using all the original letters exactly once. For example, the words "listen" and "silent" are anagrams of each other. Determining whether two strings are anagrams is a common problem in programming, especially in text analysis and cryptography. In this …

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Java 8 – Reverse a String Using Streams

Introduction Reversing a string is a fundamental problem often encountered in various programming tasks. Whether you’re dealing with text processing, solving coding challenges, or working on algorithms, the ability to reverse a string efficiently is essential. Java 8 introduced Streams, which allow for a more functional and concise approach to solving this problem. In this …

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Java 8 – Find the First Non-Repeated Character in a String

Introduction Finding the first non-repeated character in a string is a common problem in programming, especially in scenarios like parsing text or analyzing data streams. Identifying the first unique character can help in tasks such as detecting errors in input data, improving data processing efficiency, or even in developing algorithms for natural language processing. Java …

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Java 8 – Count Occurrences of Each Word in a String

Introduction Counting the occurrences of each word in a string is a common requirement in text processing, particularly in tasks like analyzing text data, creating word frequency tables, or identifying the most common words in a document. With Java 8, you can accomplish this efficiently using streams and collectors. This guide will demonstrate how to …

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Java 8 – Count Duplicate Characters in a String

Introduction Counting duplicate characters in a string is a fundamental task in programming, particularly in text processing and data analysis. Whether you’re dealing with user input, parsing text files, or analyzing data streams, identifying characters that appear more than once can provide valuable insights. With the introduction of Java 8, counting these duplicates has become …

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Java HttpClient sendAsync() Method

The sendAsync() method in Java is an abstract method provided by the java.net.http.HttpClient class. It sends an HTTP request asynchronously using the specified response body handler and returns a CompletableFuture of the response. This allows you to perform non-blocking HTTP communication, where the request and response handling can occur concurrently with other tasks.

Java Records

Introduction Java 14 introduced a new feature called Records, which became a standard feature in Java 16. Records are a special kind of class in Java that are designed to model immutable data and eliminate boilerplate code associated with creating classes that are primarily used to store data. Records provide a concise way to declare …

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Code Snippets in Javadoc for Enhanced Documentation

Introduction Java 18 introduced a new feature called code snippets in Javadoc, which enhances the way developers document their code by allowing the inclusion of executable code snippets directly within Javadoc comments. This feature aims to improve the clarity and usability of documentation by providing real-world examples that can be compiled and tested automatically. By …

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Stream.toList() Method in Java

Introduction Java 16 introduced a new method called toList() in the Stream interface, which provides a convenient way to collect elements from a stream into an immutable List. This method simplifies the process of collecting stream elements by eliminating the need for the more verbose Collectors.toList() or Collectors.toUnmodifiableList() methods. The toList() method returns an unmodifiable …

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Java 16 New Stream Methods – toList(), mapMulti(), ofNullable()

Java 16 introduced several new methods in the Stream API, enhancing the functionality and flexibility of streams in Java. These additions make it easier to work with streams by providing more options for processing, transforming, and collecting data. The new methods in Java 16 include Stream.toList(), Stream.mapMulti(), and Stream.ofNullable(). Key Points: Stream.toList(): Provides a convenient …

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Pattern Matching for instanceof in Java

Introduction Java 16 introduced pattern matching for instanceof, a feature that simplifies the use of the instanceof operator and type casting. This enhancement allows developers to perform type checks and casts more concisely and safely. With pattern matching, the instanceof operator not only checks the type but also casts the variable to the desired type …

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Java 15 New String and CharSequence Methods

Java 15 introduced several new methods in the String and CharSequence classes to enhance the manipulation of strings and character sequences. These methods provide more convenient ways to perform common operations and improve code readability and efficiency. Key Points: Improved String Manipulation: New methods offer more straightforward and efficient ways to work with strings. Convenience: …

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Helpful NullPointerExceptions in Java

Introduction Java 14 introduced a new feature known as Helpful NullPointerExceptions that aims to improve debugging by providing more informative error messages when a NullPointerException occurs. This feature helps developers quickly identify the root cause of NullPointerExceptions by specifying which part of the expression was null, making it easier to fix bugs in Java applications. …

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Java 12: Compact Number Formatting

Introduction Java 12 introduced compact number formatting as part of the java.text.NumberFormat class, allowing developers to format numbers in a concise and human-readable way. This feature is particularly useful for applications that need to display large numbers in a compact form, such as financial or statistical data. Compact number formatting is supported through the NumberFormat.Style …

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Java 12 New String Methods

Java 12 introduced new methods to the String class that enhance string manipulation capabilities. These methods provide more flexibility and convenience for developers working with strings, offering solutions for common string-related tasks such as alignment and transformation. New String Methods in Java 12 1. indent(int n) The indent() method was enhanced in Java 12. It …

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Files.readString() and Files.writeString() in Java

Introduction Java 11 introduced two new methods, Files.readString() and Files.writeString(), which simplify reading and writing text files. These methods provide a more convenient way to handle file I/O operations by allowing you to read an entire file into a string or write a string directly to a file, eliminating the need for additional buffering and …

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Java 11 New String Methods

Introduction Java 11 introduced several new methods to the String class, providing more convenience and efficiency in string manipulation. These methods simplify common string operations and enhance the overall functionality of the String class. This guide will cover the new methods added in Java 11, including isBlank(), lines(), strip(), stripLeading(), stripTrailing(), repeat(), and indent(). Key …

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